Registry data as of Aug 27, 2026

Eileen Alessandro, NP

Family Nurse Practitioner · West Islip, NY

Eileen Alessandro, NP is a family nurse practitioner with a practice address in West Islip, New York, and NPI 1649601758, issued on Nov 29, 2013. Check the license (New York F336476-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1649601758
Name
Eileen Alessandro
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
F336476-1 NY
Self-reported in NPPES; status is on the state search
Practice location
540 Union Blvd, West Islip, NY 11795
Phone
(631) 669-2555
Enumerated
Nov 29, 2013
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 540 Union Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michael Aaron, MDCardiovascular Disease Physician1790762623
  2. Larry Altschul, MDCardiovascular Disease Physician1093794901
  3. John Asheld, DOCardiovascular Disease Physician1699935973
  4. Wilbur Asheld, DOCardiovascular Disease Physician1710247549
  5. Uschi Auguste, MDCardiovascular Disease Physician1679872824
  6. John Bello, M.D.Cardiovascular Disease Physician1902110778

Verify Eileen Alessandro in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license F336476-1
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

3.5 times the Medicare Part D claims of the average family nurse practitioner in 2024

4,587 Medicare Part D claims for 1,920 beneficiaries, against an average of 1,302 among the 128,048 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Eileen Alessandro4,587
  2. Specialty average1,302

Most prescribed

  1. Atorvastatin Calcium715 claims
  2. Metoprolol Succinate542 claims
  3. Rosuvastatin Calcium386 claims
  4. Clopidogrel216 claims
  5. Eliquis192 claims
  6. Amlodipine Besylate183 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's Medicare quality score for 2023: 84.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score85.3
  2. Costout of 100 · 30%57.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,468.37

48 payments, mostly food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 91,435 providers of this specialty with any payment received $675.31 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Eileen Alessandro$1,468.37
  2. Specialty average$675.31

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. St Francis HospitalWest Islip, NY

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

42 family nurse practitioner records list a West Islip practice address

They are 42 of the 1,107 NPPES records with a West Islip practice address, and 13,030 family nurse practitioner records in New York.

Other family nurse practitioner records in New York

  1. Carolyn A'Hearn, NPSyracuse, NY1093435554
  2. Lindsey Aanonsen, FNPStaten Island, NY1386368926
  3. Abigail Aaron, FNPNew York, NY1548125594
  4. Memoudou Abalola, NPBronx, NY1154580520
  5. Jennifer Abate, FNP-BCNew York, NY1568134732
  6. Karen Abate, PHD, APRN- BC, FNAPNew York, NY1669599585
  7. Tatiana AbayaBronx, NY1366323958
  8. Evilina AbayevaFresh Meadows, NY1932929585
  9. Dalia AbbasRockville Centre, NY1871425363
  10. Toufeeq Abbasi, NPNew York, NY1184632655

Common questions

What is Eileen Alessandro, NP's NPI number?

Eileen Alessandro, NP's National Provider Identifier (NPI) is 1649601758, issued on Nov 29, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Eileen Alessandro, NP located?

The NPPES record lists a practice address at 540 Union Blvd, West Islip, NY, 11795. Phone: (631) 669-2555. Providers update this record themselves, so call before visiting.

How can I verify Eileen Alessandro, NP's license?

NPPES lists New York license number F336476-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does Eileen Alessandro, NP prescribe under Medicare Part D?

In 2024, Eileen Alessandro, NP had 4,587 Medicare Part D claims for 1,920 beneficiaries; the average among family nurse practitioner prescribers was 1,302. Part D covers Medicare prescriptions only.

What is Eileen Alessandro, NP's Medicare quality score?

The 2023 MIPS final score is 84.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.